In a Wheatstone bridge, if the bridge is balanced, what can be said about the ra

₹0.0

Question: In a Wheatstone bridge, if the bridge is balanced, what can be said about the ratio of the resistances?

Options:

Correct Answer: R1/R2 = R3/R4

Solution:

In a balanced Wheatstone bridge, the ratio of the resistances in one branch is equal to the ratio in the other branch, hence R1/R2 = R3/R4.

In a Wheatstone bridge, if the bridge is balanced, what can be said about the ratio of the resistances?

In a Wheatstone bridge, if the bridge is balanced, what can be said about the ratio of the resistances?

Correct Answer: R1/R2 = R3/R4

Step 1: Understand that a Wheatstone bridge has four resistors arranged in a diamond shape.
Step 2: Identify the resistors as R1, R2, R3, and R4.
Step 3: Know that the bridge is balanced when there is no current flowing through the middle part of the bridge.
Step 4: When the bridge is balanced, the voltage across the middle part is zero.
Step 5: This condition leads to the relationship between the resistors: the ratio of R1 to R2 is equal to the ratio of R3 to R4.
Step 6: Write this relationship as R1/R2 = R3/R4.

Wheatstone Bridge – A circuit used to measure unknown resistances by balancing two legs of a bridge circuit.
Balanced Condition – A state in which the voltage across the bridge is zero, indicating that the ratios of resistances are equal.
Resistance Ratio – The relationship between the resistances in the two branches of the bridge, expressed as R1/R2 = R3/R4.